3 5/8" diamond hole saw bits for concrete granite - Core Drill Bits Marble Stone Tiles Masonry Drilling Coring By Stadea Stadea 3 5/8 inch concrete masonry diamond hole saw bits core drill bit for stone concrete granite tile coring core drilling cutting Wet Dry Drill/Core through Concrete, Granite, Masonry, Tile, Stone, Marble sharply with precision Aggressive and durable diamond segments, Segment Height 9 MM, Width 24 mm, Thick 3.5 mm Optimal RPM 900 Arbor 5/8" 11 T